Oh okay lol. Well okay so electrical issue.....i
Are you meaning the unit itself or the wiring harness?

http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

the black box is sort of hard to break unless one goes dicking with it.. trying to "clean" it's optics by spraying something in there and wiping it off.. most likely cause is a faulty wire. I'd start there.

helping to rule things out.. your ecu is not the culprit.. those things don't generally break.. So that just leaves.. your afm. or your afm circuit.. the box or its wires.. check the voltage and you have your answer

My turn.... ROTFLMAO, I believe...

He's got an N/A which means he's got a VAFM (Vane AFM).... They are a wear component and do wear out. ;) But really 20+ years of vibration and bouncing around can take a significant toll on the KVAFM as well. Regardless, the issue here is most likely the AFM or the harness.

missed that..
touche

agreed on the years of vibrations.
I always found it interesting that in the lexus the kvafm wires are held in place more securely then the poor supras..

Can't say that I've witnessed that. They're just newer and more elastic.

the one I have of a ls400 has a nice rubber boot over the connector instead of just the hard plastic the 7m has. also has a secure point directly to the side of the connector to stop wobbles.. they just look beefier. =)

We're getting further and further off topic. I'd be interested in seeing pictures comparing the two though. Perhaps PM me or post a thread about it? I'm sure replacement plugs are still available for the Lex and it may be worth it to hunt down the part numbers for the connector, boot and pins for those who want/need to replace their worn out connector.

Well my question is with all these codes at once, doesn't that kinda hint to the ecu? I mean I replaced the gasket on the O2, checked the connector and wiring and still the code 21. I checked the connector on the afm, i also checked the resistance on the tps and afm and all values were off.

I'm just going based on how common each failure is. AFM, TPS, O2 sensor failing is quite common. Wire harness failure is fairly common. ECU failures do happen but it's not a very common occurrence. BUT, a bad ECU isn't going to make a TPS or AFM fail. So even if the AFM is bad... then you can add that to the existing list. :( If you have access to another ECU to try out then by all means do so but a bad AFM is still a bad AFM....

Which O2 sensor did you replace? The Cali spec vehicles have two, one before the cat and one after. They're not the same. Additionally, if you replaced an O2 sensor which had a heater circuit with a generic sensor which doesn't the ECU will throw an error code for the O2 sensor (GTE models do use these and GE don't but I don't know about Cali spec GEs).

Well although I am in cali this wasn't a Cali car so I have one O2. And its the one just below the manifold